Roller skate



M. K. KAHLE ROLLER SKATE Aug. 1, 1950 2 Sheets-Sheet 1 Filed April 16, 1946 M. K. KAHLE ROLLER SKATE Aug. 1, 1950 2 Sheets-Sheet 2 Filed April 16, 1946 INVENTOR. Mal K161]? le Fatentecl Aug. 1, 195 0 UNITED STATES PATENT OFFICE 2,517,322 ROLLER SKATE Max K. Kahlc, Chicago, Ill.

Application April '16, 1946, Serial No. 662,445

1 Claim. (Cl. 28011.19)

l My invention relates to improvements in the construction of roller skates.

An important object of my invention is to provide a roller skate construction which can be adjusted for span, or length, or distance, between the bearing or axle mountings of the front and rear wheels.

Another object of my invention is to provide side plate supports of substantially triangular formation, being provided with locating angularly-formed lugs or extensions and mounted on a channel structure, which is provided with a series of anguIarly-iormed notches, or seating portions to receive the said singularly-formed extensions.

Another object of my invention is to provide a roller skate assemblage whereby the front and the rear wheel mountings may be interchangeably, and replaceably dismantled or assembled.

A still further object of my invention is to provide a roller skate construction which is adaptable to instant change, or conversion, forming as preferred, either a dual wheel skate, a triple wheel skate, or a quadruple, or four wheel skate.

A still further object of my invention is to provide a simple wheel construction, having a hemispherical seat or raceway therein for seating the ball bearings on which the wheel is mounted, and seating means provided in nut elements secured to a suitable spacer support, or bushing, for confining the said wheel to operate smoothly about the raceway compositely formed between the said seated portions of the said nut elements and the hemispherical seat portion within the said wheel.

Other features, and objects, inherent in my invention, will become apparent from an examination of the accompanying drawings, having particular reference to the various views illustrating the different convertible forms of my invention, as well as the specific and detailed structure of the wheel and bearing mounting utilized in my construction; wherein like numerals denote like parts, and in which:

Fig. 1 is a perspective View of one form of my skate invention showing a wheel and axle mounting in exploded arrangement, so as to, more clearly, indicate the specific and detailed structure thereof.

Fig. 2 is an end view of the skate illustrated in Fig. 1.

Fig. 3 is a cross-sectional view taken, substantially, on the line 3--3 of Fig. 2.

Fig. 4 is a fragmentary and enlarged view showing a slightly modified mounting means, being provided with angularly-formed extensions and seating notches therefor.

rear portionof the Fig. 5 is an end view of the invention shown in 2 Fig. 7 isa side view of the invention shown in Fig., 6.

Fig. 8 is another slightly modified form of my invention illustrated in Fig. 1, wherein the forward portion thereof has a single wheel mounted thereon, whereas the rearward portion thereof has two wheels, resulting in a triple wheel skate construction.

Fig. 9 is a side view of the Fig. 8.

Referring to the various views 1, 2 and 3, my

invention is generally designated l0, and consists of a channel element 12, having a recessed portion i3 confined between its upright walls Ill. The said channel portion is securely attached to the sole-shaped element l I, which is substantiallyof the formation of the breast portion of the sole of a shoe, so as to permit securing shoes to the skate construction.

I At the front and rear portions of the side l8 of the channel l2, a series of holes [9 and 2 0 are pierced, or bored, in order to provide different positions for attaching the supports 23, which are provided with two holes to register in alignment with any two openings 20. Two similar rear supports are also provided to register in alignment with any of the holes I 9 in proper spanning and spaced relationship.

The sides 18 of the channel are also reinforced by the spacer elements l4, l1 and [6 which are securely held in place simultaneously holding thesupport plate 23 by means of screws 2| and lock nuts 22. The pin 15 secures firmly the spacer element M. The support plates 23 are, preferably, of triangular formation, the lower bases thereof being provided with holes 26 for securing the same in place; the upperportions or apieces 25 thereof being suitably bored out, or drilled, in order to retain the fastening screws 30, the bodies 37 beingfitted within the bushing 25, their other ends 39, being suitably threaded in order to accommodate the lock nuts 38. The spacer elements ll may be secured to any pairs of holes 2!] to effectuate adjustability for length of skates.

The structure of the wheels Ti and 28; is preferably, of hollow. and shell-like formation, being cylindrical in shape and having an inner opening merging with a central semi-circularly sectioned raceway to receive the ball bearings 33. The wheel structure 28 has a central raceway designated 32 in conjunction with the seat portion 3| of the confining nuts 30, provides a suitable pocket or retainer for the balls or ball bearings 33.

The lock nuts 30 are secured to a bushing which has threaded extensions 34, and a central shoulder portion 35 so as to arrest the nuts 30 in proper aligning position with respect to the raceway 32 within the wheels 28 or 27. The washers 29 are, preferably, secured so as to span and overlap the opening in the wheel extending over the nut as invention shown in sembly so as to seal the wheel against dirt, dust and foreign elements from accumulating within the interior confines of the wheel bearings.

To adjust the skates for length, or span, between the front and rear wheels 2'! and 28 respectively, the screws or studs 2! are loosened by loosening the nuts 22, removing the same and positioning the support plates 23 in register or alignment with the openings 23 or it which will give the desired distance from center to center of the axes of the wheel assemblages in front and rear. In making adjustments, it may be desirable to have a more definite locating means than to rely simply on the body of the screw 21 for gauging alignment, and to expedite making adjustments.

The illustrations of Figures 4 and 5 indicate a modified structural plate support 40, similar to the plate support 23, with the exception that the sides thereof have bent ears or ledges 4| and M in angular relationship thereto, the bottom portions of these ledges being in turn formed to provide the angularly-formed extensions 42 and 45, whereas the channel sides it are provided with a number of angular notches or seats 43 which will engage the saidangularly-formed extensions 42 .and 55. Thus when this structure is usedfor effectuating a change of position of the wheel assemblages, front or rear, the instantaneone location of the angularly-formed extensions Q2 and 45 within the proper seat portion 43, will instantly gauge and locate in proper alignment all the holes 25 as well as the holes in the reinforcements ii and i5, as well as the holes 20 or ill, depending on whichend the adjustment is being made, thus facilitating the instant entry and fit of the screw 2| to be engaged in locked position by thenuts 22 completing the adjustment operation.

In Figures 5 and '7, I show a dual wheel construction which is slightly modified so far only as the axle mounting structure is concerned in order to permit of interchangeability of mounting a wheel within the channel confines I3, or duplex wheels outside of the side walls l8 of the channel l2. By this interchangeable feature, I make possible the convertibility of a four wheel skate, toa three wheel construction as indicated in Figures 8 and .9.

To elucidate further .with respect to the construction of the wheel mounting shown in sec tion at the rear portion of Figure 6, it Wi1l be noted, that I use nuts 30 as heretofore, the distinguishing feature being that a threaded bushwithin the confines [3 of the channel 12, capable of receiving or having inserted therein the bolt 56 held firmly and rigidly in place by the nut 41, and the lock washer "48.

In removing the wheel assemblage, "the same is removed with the nuts 30 in assemblage, the washer 29 and the bushing '52, as well as the axle 46 and the mating lock nut 4 and washer 48, and the same may be interchangeably replaced by the assemblage shown in the exploded view-of Figure 1, whereby the wheel assemblages with the washers may be used, the only distinguishing element required, is the central spacer bushing 25 being interposed between the plates 23, and the longer stud or bolt 36 being used with its mating lock-nut 38 securing the dual wheel assemblage in place. Thus it can be seen, that I have provided a structure which lends itself readily and expediently to interchangeability so that a skate of two wheel, three wheel, or four wheel construction may be quickly and readily assembled. It is also indicated in the drawing by clear showing how my skate structure can or from a three wheel to a four wheel construction.

I believe, I have herein shown illustratively, and described indetail, the nature and constructionof my invention, so that those familiar with the art will have no difficulty to practice my invention, yet inasmuch as the same is susceptible of modifications, and improvements, I hereby reserve the right to all modifications and improvements coming within the scope and spirit of my disclosure, and my invention, as well as all those that are implied and embraced in the accompanying drawings, also any that may fall within the purview of the foregoing disclosure; my invention to be limited only by the appended claim.

Having thus described and disclosed my invention, what I-claim as novel and desire to secure by Letters Patent, is:

.A skate comprising, a rigid channel base, two pairs of triangular supports removably and adjustably secured to the said channel base at front and rear ends thereof, the said channel base being provided with a multiplicity of adjustment holes on opposite flanges thereof, the said triangular supports each being provided with a pair of holes in spaced relationship to selectively align adj ustably with a pair of the said first-mentioned adjustment holes, axle elements secured to the said triangular supports, ball bearing wheels secured to the said axle elements adjacent the .outersurfaces of the said triangular supports,

a centrally positioned tubular reinforcing elementrsecured to the saidchannel base, and a pair of reinforcing elements to strengthen the sides of the said channel base and positioned within the confines of the said channelbase and pro vided with a pair of holes alignable with a pair of the said first-menti0ned holes and with a pair of the said second-mentioned holes.

MAX K. KAI-ILE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

